Apache tear
Local name for spherical obsidian, usually embedded in gray perlite, mainly from Arizona, United States. The spheres of black-gray translucent obsidian occur as cores in…
Local name for spherical obsidian, usually embedded in gray perlite, mainly from Arizona, United States. The spheres of black-gray translucent obsidian occur as cores in…
Recorded live session in which I discuss and show a variety of different forms of volcanic glass. Volcanic glass occurs in nature in various forms,…
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